[linux-cirrus] Re: EP93XX Ethernet autonegotiation hangs till link is up
- From: Eric BENARD / Free <ebenard@xxxxxxx>
- To: linux-cirrus@xxxxxxxxxxxxx
- Date: Mon, 11 Jul 2005 14:08:24 +0200
Michael Burian wrote:
> When doing
>
> ifconfig eth0 up # simplest case that reproduces the error
>
> and no cable is connected the whole system hangs until a cable get's
> connected again.
>
> Here's a code snippet[1] of the function I suspect to cause this.
> The whole driver is part of the patch at [2].
>
>
> Any ideas what should be done instead of while(1)?
>
hi,
I met the same problem and added a timeout like this :
U8 timeout;
phy_wr(4, 0x01e1); /*Set 802.3, 100M/10M Full/Half ability*/
phy_wr(0,(1<<12)|(1<<9)); /* enable auto negotiation*/
mdelay(100);
while (1) {
val = phy_rd(1); /* read BM status Reg*/
if ( val&0x0020) /* if Auto_Neg_complete?*/
{
break;
}
if (25 == timeout++)
break;
}
this is maybe not the best solution but that works fine and prevent the
system to hang ;-)
Eric
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